NEMO Next Energy Modeling system for Optimization 2.2

NEMO (Next Energy Modeling system for Optimization) is an energy system optimization engine developed by the Stockholm Environment Institute. It helps planners, researchers, and policymakers design least-cost pathways for meeting energy demand while considering technology options, costs, emissions, resource limits, and policy targets. NEMO can operate as a standalone modeling tool or be integrated with SEI’s LEAP platform to combine scenario design with rigorous optimization. Using linear programming, it identifies cost-effective investment and dispatch strategies over multi-year horizons and across multiple regions and time slices.

Key capabilities:

• Capacity expansion and operational dispatch with technology-rich detail
• Multi-region modeling with trade and transmission representation
• Treatment of variable renewables, storage, and demand-side options
• Emissions accounting, resource constraints, and policy targets (e.g., renewables, emissions caps)
• Flexible temporal resolution using time slices (e.g., seasons, days, hours)
• Compatibility with tabular inputs and outputs; integration with LEAP workflows
• Support for a range of optimization solvers

Typical applications include national energy planning, integrated resource planning, power system expansion studies, renewable integration analysis, and climate mitigation assessments such as NDCs and long-term strategies. NEMO emphasizes transparency, reproducibility, and practical performance for large-scale energy system models.

NEMO Next Energy Modeling system for Optimization is developed by Stockholm Environment Institute. The most popular versions of this product among our users are: 1.6, 1.8, 1.9, 2.0 and 2.2.